Valve for air-brake systems.



PATENTED MAR. 6, 1906. J. H. BYE-B00.

VALVE FOR AIR BRAKE SYSTEMS.

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VALVE FOR AIR BRAKE SYSTEMS. union-Io! rum) In 22, ms.

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VALVE FOR AIR BRAKE SYSTEMS.

APPLIUATION FILED HAY 2B, 1903.

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VALVE FOR AIR BRAKE SYSTEMS.

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UNITED STATES PATENT OFFICE.

JOHN H. BLEOO, OF NEW YORK. N.Y., ASSIGNOR TO. ABRAHAM B. LEVY, OF NEWYORK, N. Y.

VALVE FOR AlFi-BRAKE SYSTEMS.

Specification of Letters Patent.

Patented March 6, 1906.

Application filed May 22, 1903 Serial No. 158,219.

To aZZ whom it may concern;

Be it known that I, JOHN H. BLEOO, of New York cit borough of Brooklyn,county of Kings, an State of New York, have invented certain new anduseful Improvements in Valves for Air-Brake Systems, of which thefollowing is a specification.

My invention relates to improvements in air-brake systems orapparatuses, and more particularly to a controllingvalve, com monlycalled an engineers valve, for controlling the air-brakes on a car orcars used sin ly or in trains, the valve serving to contro theWell-known lain and quick-acting triple valves, as wel as such valvescommonly known as recharging triple valves, which embody a device forrecharging trainpipe and auxiliary; reservoirs while brakes are applied;and t e objects of my invention are to pfovide im rovements in the valveportions t at contro the service or reduction of the train-line pressureand also in the valve that controls the air for the various conditionscommonly called running, service, full release, emergency, and la Theinvention comprises the nove details of improvement and arrangement ofparts, that will be more fully hereinafter set forth and then pointedout in the claims.

Reference is to be had to the accompanyin drawings, formin part hereof,whereinigure 1 lsavertica section of an cngineers valve embodyin myinvention substantially on the line 1 1 in ig. 4. Fig. 2 is a detail topview of the service-valve shown in Fig. 1. Fig. 3 is a section thereofon the line 3 3 in Fig. 2. Fig. 4 is a horizontal section substantiallyon the line 4 4 in Fig. 1 looking in the direction of the arrows, thepressured'egulating valve H being omitted. Fig. 5 is a plan view on areduced scale. Fig. 6 is a detail side view, partly broken away. i 7 isa vertical section at right angles to h ig. 1, substantiall on the line7 7 in Figs. 1 and 4, looking in the direction of the arrows, showingthe pressure-regulating valve in position. Fig. 8 is a side elevatio-nofthe valve in the position shown in Fig. 1'. Fig. 9 is a plan ew of themain air-controlling valve, artly broken. Fig. 10 is an edge viewthereof looking in the direction of the arrow (1 in Fig. 9. Fig. 11 is-asection on the line 11 11 in Fig. 18 looking in the direction of thearrows b. Fig. 12 is a section on the line 12 12 in Fig. 10 looking inthe direction of the arrows c. Fig. 13 is a side view of the valvelookin from the right in Fig. 9. Fig. 14 is a detai face View of theseat for the valve shown in Fig. 9; and Fi 15 is a section on the line15 15 in Fig. 14.,a so showing the valve 9 in section.

In the accompanying drawings similar numerals and letters of referenceindicate corresponding parts in the several views.

The main-valve casing is indicated generally at A and for convenience ofmanufacture is shown comprising main sections or members 1 2 3 4 and acap or cover 5, and at 6 is indicated a stud for supporting the casingin suitable manner. The members of the casing A are rovided with ports,assages, and seats, which may he produces in suitable manner. The member3 is shown rovided with a cougling 7 for connection witli areservoir-pipe and at 8 the member 4 is shown provided with a couplingfor connection with a train-pipe G, that communicates with auxiliaryreservoirs and triple valves of an airbrake system arranged in anywell-known manner The member 1 is provided with a main air-distributingchamber C,inclosed by cap 5, and said member has an up or extension 1within said chamber PIOVI ed with a seat 1 for a rotary slide-valve 9,that is contained within chamber C.

At 10 is indicated a stem, shown journaled in the members 1 and 5,andsaid stem is connected with valve 9 for rotating orsliding thelatter, as by means of a tenon 11., en-

agin a slot 9 in said valve, a s ring 12 bemg s own connected with saistem and bearin against valve 9 to hold the latter norm iv to its seat1". (See Fig. 4.) m

At 13 is indicated a lever or handle for the engineer to o crate andconnected with stem 10 for contro 'ng valve 9, a suitable lockin devicecarried by said lever being indicate at 14 for holding the valve in setpositions in conjunction with notches at 5" on can 5. (See Fig. 15.)- V

Within the casing is located a passe. e 15, leading from reservoir-pipeB to chain or C for supplying the latter with compressed air or anaogous fluid, and at 16 is indicated an opening communicating withpassage 15 for connection with a pressure'gage in Well? known manner. Inthe casing A is a passage 17 communicating at the upper part withchamberOat seat 1 and leading to a chamber D, that is in communicationwith a passage 18, leading to train-pipe G.

In a chamber D is a piston E, the stem E of which piston controls arotary valve F to be used in the service operation. The piston Eis shownguided. by pins e entering a ertures or slots 6 in the casing, and theva ve F is guided by and adapted to rotate around the stem E. Said valvehas one or more ports f, that communicate through one or more orts l8with a passage 18 and its outlet 18", eading from chamber D, fordischarging trainpipe air to the atmosphere, as more fully hereinafterexplained. The valve F is caused to rotate during the reciprocations ofpiston E by means of a pin-and-slot connection be tween-stem E and thevalve F. In the arrangement shown a pin E carried by stem E, travels inan angular or curved slot F in valve F, providing at least aquarter-turn, (two such slots F being shown engagin the opposite ends ofpin E for equalizing t e action.)

The control of the air through the medium of valve 9 is accomplished asfollows: The valve 9 has a passage or port 9*, which is ada ted tocommunicate through a port 17, lea ingr'rom seat 1*, with passa e 17 andwith chamber 0 when valve 9 is in t e fullrelease osition, (shown inFig. 4,) whereby air passes om pi e B, through passage 15, into chamberC, t ence through ort 9 and passage 17 to chamber D beneat piston E andthence to train-pipe G. Valve 9 also has a port 9 in communication withport 9 and adapted when valve 9 is in said position to communicate witha passage 19, leading by a branch 19 to seat 1*, passage 19 alsocommunicating with chamber D above piston E. (See Fig. 1.) Passage 19also at 20 leads to an outlet for a well-known equalizing-reservoir.(See Fig. 4.) Air is thus supplied from chamber C through ports 9*, 9,and 19 to chamber D above piston E. A passage 21 communicates at 21 and21 with valve-seat 1 andoleads at 21 to a chamber 22 in apressure-regulating valve, (indicated generally at H.) In the easing ofsaid valve is a spring-seated checkvalve 23, shown in chamber 22, tocontrol the passage to a chamber H above a diaphragm 24 the stem ofwhich valve rests upon said diaphragm, and beneath said diaphragm is apiston 25, controlled by spring 26 to normally hold the iston a amst thediahragm and unseat va ve 23. %he chamber I is connect ed by port 27 andpassage 27 a with passage 17. When valve 9 is in the position shown inFig. 4, air passes from chamber C through passa e 21 to chamber 22 andthence from cham er H through 27 27 a to passage 17 and train-pipe G. Atthis time reservoirpressure is in the main passages 17 and 19, and thusreservoir-pressure through the system is established. Valve 9 also has aport 9 communicating with port 9 and also a ort 9 communicating withchamber C and eading to seat 1 adapted to register with port 21 of thevalve-seat leading to passage 21. When the valve 9 is'in the runningposition, port 9 will communicate with port 17, 9 with 19, and port 9will communicate with port 21, port 9 not being directly incommunication with chamber C, and thereupon air will flow as follows:from passage 15 into chamber 0, through ports 9 and 21 to and throughthe pressure-regulating valvechamber 22, past cheek-valve 23 intochamber H, Fig. 7, through 27 and 27 to passage 17 to chamber D beneaththe piston E, and thence to train-pipe G, and also through passage 17and its port 17 to ports 9 and 9 of valve 9, and thence from 9 through19 (with which 9 now registers) to equalizing-chamber D, as well as tothe outlet for equalizingreservoir at 20, until a predetermined pressureis obtained throughout the system, whereupon the diaphragm 24 and piston25 of the pressure-regulating valve H are forced down ward, therebyallowing check-valve 23 to close on its seat, thus cutting oiT thefurther flow of air to the train-line. When pressure next falls belowthat re uired, the piston 25 and diaphragm 24 are orced upwardly byspring 26, unseating check-valve 23 and restoring pressure throu h thesystem. Valve 9 has a port 9 relative y smaller than port 9 for use inthe lap osition, that is adapted to communicate wit port 21 of passage21, and valve 9 also has a cavity 9 adapted to simultaneously registerwith a (port 19*, com-' municating with passa e 19 an with port 17 whenvalve 9 is in the ap position. In such position of the valve air passesthrough 15 to chamber C and thence through rechargin port 9 of therotary slide-valve 9 in less v0 ume than through ort 9 through passage21 to pressure-regu ating valve-chamber 22, and past check-valve 23 tochamber H, and through ports 27 and 27 to and through passage 17 andchamber D downward to trainline at G, (valve H now serving as arecharging-valve for the system when recharging triple valves are used,)and also in an upward direction to port 17 at slide-valve seat 1', andthrough cavity 9 in valve 9, which now registers with both 17 and 19 topassage 19 and thence to equalizing piston-chamber D and to outlet for eualizing-reservoir at 20, whereby the entire rake system may berecharged with air, while the brakes are applied, without releasin thelatter, because such reduced volume 0 air acts first on therecharging-valve in the triple valve in a system of recharging triplevalves. When the brake system has triple valves not having a rechargingdevice, the port 9 in the rotary slide-valve 9 should be closed, as by ascrew-plug, whereby in the lap position all of the piston, a rotativevalve control an outlet-port communicating with one chamber, and meansconnecting said. piston with said valve for causing the latter to turnto permit a reductionof air-pressure on the other side of said piston,substantially as described.

8. The combination of a casing having an air-supply chamber andpressure-regulating chambers, a piston between the last-named chambers,a rotary valve to control an outlet from one of said chambers, means tocause the piston to turn said valve, said casing having a passageleading to the air-supply chamher and passages connecting the air-supplychamber with the pressure-chainbers on opposite sides of the piston, apressure-regulating valve, said casing having a passage connecting saidvalve with the lirst -named chamber and a passage connecting said valvewith the passage leading to the pressurechamber on the train-pipe sideof the piston, and a valve in the first-named chamber having ports andpassages adapted to control the ports connected with said chamber,substantially as described.

9. The combination of a casing having an airsupply chamber, a pressureregulating valve connected by a passage with said chamber, said casinghaving chambers D and l), a piston between said chambers, passagesconnecting said air-supply chamber with said chambers D and D, a passageproviding communication between said valve and chamber D, and a valve tocontrol the passages leading from the airsupply chamber, said valvehaving means to cause a reduction of pressure in the chamber 1) asrequired, said valve also having means to admit air from the air-supplychamber to the regulating-valve for recharging the system in thecustomary lap position, substantially as described.

10. The combination of a casing provided with an air-supp] y chamber, achamber D for connection with a train-pipe and provided with an outlet,a passage connecting said chambers, the casing having a chamber 1), apiston between the chambers D and D, a valve operated by said piston tocontrol the outlet from chamber D, the casing having a passageconnecting the chamber D with the air supply chamber, a pressureregulating valve having a chamber connected by a passage with theair-supply chamber and another chamber connected by a passage with thepassage leading to chamber D, and a slidevalve in, the air-supplychamber provided with means to direct air in the running position to thefirst-named valve which then serves as a pressure-reducing valve for thesystem, the slidevalve also having means to cause air to escape in the"serviceposition, and having means to cause air to pass through thepressure-regulating valve in the customaI'y lap position to cause saidpressurearranged to regulating valve to act as a recharging-valve forthe system, substantially as described.

11. The combination of a casing having an air supply chamber, a pressureregulating valve connected by a passage with said chamber, said casinghaving chambers D and D,

a piston between said chambers, passages connecting saidair-supplychamber with said chambers D and D, a passage providingcommunication between said valve and chamber D, and a valve to controlthe passages leading from the airsupply chamber, said valve having meansto cause a reduction of pressure in the chamber 1) as required, saidvalve also having means to admlt air from the airsupply chamber to thetrain-pipe while the other passages controlled by said valve are blankedand the brakes are applied, substantially as described.

12. The combination of a casing having an air supply chamber, a pressureregulating valve connected by a passage with. said chamber, said casinghaving chambers D and D, a piston between said chambers, passagesconnecting said air-supply chamber with said chambers D and D, a passageproviding con'mumication between said valve and chamber D, and a valveto control the passages lcading from the air-supply chamber, said valvehaving means to cause a reduction of pressure in the chamber D asrequired, said valve also having a port to coact with a port and passagein the casing to sup ply air to the train-pipe while the other passagescontrolled by said valve are blanked and the brakes applied,substantially as described.

13. The combination oi a casing having an air supply chamber, a pressureregulating valve connected by a passage with said chamber, said casinghaving chambers D and D, a piston between said chambers, passagescol'mecting said air-sup ply chamber with said chambers D and D, apassage providing communication between said valve and chamber D, and avalve to control the passages leading from the air-supply chamber, saidvalve havingmeans to cause a reduction of pressure in the chamber l)required, said valve also having means to admit airfrom the air-supplychamber to the regulating-valve for recharging the system through saidregulating-valve while the other passages controlled by said valve areblanked and the brakes are applied, substantially as described.

14. The combination of a casing having an air-supply chamber, apressure-regulating valve connected by a passage with said chamber, saidcasing having chambers D and D, a piston between said chambers, passagescom'lecting said air-supply chamber with said chambers D and D, apassage roviding con'mmnicathm between said va ve and chamber 1), and avalve to control the passages lcading from the air-supply chamber,

said valve having means to cause a reduction piston between the chambersD and D, a

valve operated by said piston to control the outlet lrom chamber D, thecasing having a passage connecting the chamber D with the air-supplychamber, a pressure-regulating valve having a chamber connected by apassage with the air-supply chamber and another chamber connected by apassage with the passage leading to chamber D, and a slide-valve in theair-supply chamber provided with means to direct air in the runningposition to the first-named valve which then serves as apressure-reducing valve for the system, the slide-valve also havingmeans to cause air to escape in the service position, and having meansto cause air to pass to the train-pipe while the other passagescontrolled by said slide-valve are blanked and the brakes applied,substantially as described.

16. The combination of a casing provided with an air-supply chamber, achamber D for connection With a train-pipe and provided with an outlet,a passage connecting said chambers, the casing having a chamber D, apiston between the chambers D and D, a valve operated by said piston tocontrol the outlet from chamber D, the casing having a passageconnecting the chamber D With the air-supply chamber, apressure-regulating valve having a chamber connected by a pas: sage withthe air-supply chamber, and another chamber connected by a passage withthe passage leading to chamber D, and a slide-valve in the air-supplychamber pro vided with means to direct air in the rimning position tothe first-named valve which then serves as a pressure-reducing valve forthe system, the slide-valve also having means to cause air to escape inthe service position, and having a port to coact with a port and passagein the casing to supply air to the train-pi e while the other passagescontrolled by sai valve are blanked and the brakes are applied,substantially as described.

1?. The combination of a casing provided with an air-supply chamber, achamber D for connection with a train-pipe and pro vided with an outlet,a passage connecting said chambers, the casing having a chamber D, apiston between the chambers D and D, a valve operated by said piston tocontrol the outlet from chamber D, the casing having a passageconnecting the chamber D with the air-supply chamber, apressure-regulating valve having a chamber connected by a passage withthe air-supply chamber and another chamber connected by a passage withthe passage leading to chamber l), and a slide-valve in the air-supplychanjiber provided with means to direct air in the running position tothe first-named valve which then serves as a pressure-reducing valve forthe system, the slide-valve also having means to cause air to escape inthe service position, and having means to cause air to pass through thepressure-regulating valve While the other passages controlled by theslide-valve are blanked and the brakes are a p plied, substantially asdescribed.

18. The Combinalion of a casing provided with an airsiipply chamber, achamber D for connection with a train-pipe. and provided with an outlet,a passage connecting said chambers, the casing having a chamber D", apiston between the chambers D and V D, a valve operated by said pistonto control the outlet from chamber D, the casing having a passagecoin'ieeting the chamber D with the air-supply chamber, apressure-regulating valve having a chamber connected by a.

assage with the air-supply chamber and another chamber connected by apassage leading to chamber D, and a slide-valve in the airsupply chamberprovided with means to direct air in the running position to thefirstnamed valve which then serves as a pressureredneing valve For thesystem, the slide-valve also having means to cause air to escape in theservice position, and having a port to coact with a port and passage inthe casing connnunicating with said regulating-valve to supply airthrough said regulating-valve to the system to recharge the system whilethe other ports controlled by the valve are blanked and the brakes areapplied, substantially as described.

JOHN H. BLEOO.

Witnesses 1 HENRY Brenna, T. F. Bonnnn.

